Hex BarSpecification: ASTM B446

Sourcable Ex-Stock Material for Other Forms from Japanese Distributor

Plate

Pipe

WeldingRod & Wire

Wire

Min

Max

0.5`20mm

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Corrosion resistance

For optimal corrosion resistance the material must be in a clean condition and free from all kinds of contaminants before any fabricated component is placed into service. Under these conditions ALLOY625 exhibits excellent corrosion resistance in a wide variety of media:

excellent resistance to pitting and crevice corrosion in chloride-bearing media

essentially resistant to chloride-induced stress-corrosion cracking

high resistance against impingement and erosion corrosion

high resistance to corrosive attack by mineral acids, such as nitric, phosphoric, sulphuric and hydrochloric acids, as well as to alkalis and organic acids in both oxidizing and reducing conditions

practically no corrosive attack in marine and industrial atmosphrers. High resistance to seawater and brackish water, even at higher temperatures

high resistance against intergranular corrosion following thermal treatment and welding

The solution-annealed version (grade 2) shows good resistance to many corrosive gas atmospheres:

good resistance to carburization and to oxidation under

resistance to nitridation

good resistance to halogen containing gases and to hydrogen chloride

Applications

The soft-annealed version of Nicrofer 6020 hMo (grade 1) is preferred for applications in the chemical process industry, in marine engineering and in pollution control equipment for environmental protection.

Typical applications are:

superphosphoric acid production equipment

nuclear waste reprocessing equipment

sour gas production tubes

piping systems and sheathing of risers in oil exploration

offshore industry and marine equipment

flue gas scrubber and damper components

chimney linings

For high-temperature applications, up to approximately 1000 C (1830 F), the solution-annealed version of alloy 625 (grade 2) can be used in accordance to the ASME code for pressure vessels. For design calculations for equipment for use within the temperature range of approximately 500 ?1000 C (930 ? 1830 F) the loss in ductility resulting from prolonged exposure within that temperature range must be kept in mind

Mechanical propertiesiRound Barj

Please contact us with any questions about reference or value of plate and pipe.

International Specification Comparison chart

Material

Round Bar

Plate

Pipe

Seamless

Welded

ASTM

UNSN06625

B446

B443

B444

B704/705

ASME

SB446

SB443

SB444

JIS

NCF625

H4553

G4901

H4552

DIN

2.4856

17752

17750

17751

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